Finding the Fourth Proportional to 1,912,975.40, 2,639,873.88 and 1,053,615.68
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Solution
The fourth proportional to 1,912,975.40, 2,639,873.88 and 1,053,615.68 is: 1,453,971.92
Step by Step Solution
- Step 1: Write the proportion equation
1,912,975.40 : 2,639,873.88 = 1,053,615.68 : x - Step 2: Convert to fraction form
1,912,975.40/2,639,873.88 = 1,053,615.68/x - Step 3: Cross multiply
1,912,975.40x = 2,639,873.88 × 1,053,615.68 - Step 4: Simplify right side
1,912,975.40x = 2,781,412,513,190.44 - Step 5: Solve for x
x = 2,781,412,513,190.44/1,912,975.40 - Step 6: Final answer
x = 1,453,971.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.